
function changecolor(){
	var tab = document.getElementById("tabcanvas");
	int i = 0
	var colors=new Array("FFFFCC", "CCFFFF", "CCFFCC", "CCCCCC", "FFFFFF");
	while(true){	
		tab.style.backgroundColor='colors[i]';
		pausecomp(15000);
		i= (i+1)%8;
		}
	}
	
function pausecomp(ms) {
	ms += new Date().getTime();
	while (new Date() < ms){}
	} 
	



